xentaur

annotate xentaur.py @ 29:87f19c6d1514

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redrawing bridge state
author igor
date Fri Sep 21 21:29:28 2007 +0300 (2007-09-21)
parents d22ff6f55dc5
children 532f2ed25f70
rev   line source
igor@0 1 #!/usr/bin/python
igor@0 2
igor@0 3
igor@2 4 import sys,os,time
igor@0 5 import xenomips_vars
igor@0 6 xenomips_vars.N='1'
igor@0 7 sys.path.append('/etc/xen')
igor@11 8
igor@11 9 xen_config_name='fabergeN'
igor@21 10 exec 'from '+xen_config_name+' import bridges,vbridges_table, hidden_bridges, domains, broken_links, temporary_links, domain_types'
igor@11 11
igor@29 12 bridges_turned_down=[]
igor@29 13
igor@0 14 from IPython.Shell import IPShellEmbed
igor@0 15
igor@2 16
igor@2 17 screenrc=os.environ['HOME']+"/.screenrc_xentaur"
igor@2 18
igor@10 19 def run(program, *args):
igor@10 20 pid = os.fork()
igor@10 21 if not pid:
igor@10 22 os.execvp(program, (program,) + args)
igor@10 23 return os.wait()[0]
igor@10 24
igor@10 25 def run_command(line):
igor@10 26 #cmds=line.split()
igor@10 27 #run(cmds[0],*cmds[1:])
igor@10 28 run("/bin/sh", "-c", line)
igor@10 29
igor@23 30 def run_command_return_stdout(line):
igor@23 31 p = os.popen(line)
igor@23 32 output = p.read()
igor@23 33 p.close()
igor@23 34 return output
igor@23 35
igor@0 36 def create_bridges_script():
igor@0 37 unbound_bridges=bridges
igor@4 38 create_unbound_bridges="\n".join(map(lambda x: "sudo /usr/sbin/brctl show | awk '{print $1}' | grep -q "+x+" || sudo /usr/sbin/brctl addbr "+x, unbound_bridges))
igor@4 39 create_unbound_bridges+="\n"+"\n".join(map(lambda x: "sudo /bin/ip link set "+x+" up", unbound_bridges))
igor@0 40
igor@0 41 print """#!/bin/sh
igor@0 42 # create unbound bridges
igor@0 43 %(create_unbound_bridges)s
igor@0 44 """ % {'create_unbound_bridges' : create_unbound_bridges}
igor@0 45
igor@0 46
igor@0 47 def create_domains_script():
igor@0 48 for N in range(len(domains)):
igor@11 49 print "sudo /usr/sbin/xm create "+xen_config_name+" N="+str(N)+" && sleep 1 && sudo /usr/sbin/xm sched-credit -d $(sudo /usr/sbin/xm list | grep "+domains[N]+" | awk '{print $2}') -c 10 && sleep 1"
igor@0 50
igor@0 51 def destroy_domains_script():
igor@0 52 for N in range(len(domains)):
igor@4 53 print "sudo /usr/sbin/xm shutdown "+domains[N]
igor@0 54
igor@0 55 def create_screens_script():
igor@0 56
igor@7 57 N=1
igor@0 58 screens=[]
igor@0 59 for domain in domains:
igor@11 60 screens.append("screen -t "+domain+" "+str(N)+" sh -c 'while true; do sudo xm console "+domain+" ; echo Retrying in 5 seconds...; sleep 5; done'")
igor@0 61 N+=1
igor@0 62 screenlist="\n".join(screens)
igor@0 63
igor@11 64 #
igor@11 65 # Previous terminal acccess commands:
igor@11 66 # ip="192.168.80."+str(200+N)
igor@11 67 # screens.append("screen -t "+domain+" "+str(N)+" sh -c 'while true; do ssh root@"+ip+" ; done'")
igor@11 68 #
igor@11 69
igor@4 70 #hardstatus string "\%{gk}\%c \%{yk}\%M\%d \%{wk}\%?\%-Lw\%?\%{bw}\%n*\%f\%t\%?(\%u)\%?\%{wk}\%?\%+Lw\%?"
igor@10 71
igor@11 72 f=open(screenrc, "w");
igor@10 73 f.write("""
igor@2 74 hardstatus on
igor@2 75 hardstatus alwayslastline
igor@2 76
igor@0 77 screen -t console 0 bash
igor@10 78 %s
igor@10 79 """ % (screenlist))
igor@10 80 f.close()
igor@0 81
igor@0 82 def graph_node(node):
igor@0 83 i=0
igor@0 84 domain_type={}
igor@0 85 for domain in domains:
igor@0 86 domain_type[domain]=domain_types[i]
igor@0 87 i+=1
igor@0 88 return node+" [label=\" "+node+"\",shapefile=\"shapes/all/"+domain_type[node]+".png\",fontcolor=navy,fontsize=14]"
igor@0 89
igor@29 90 def graph_bridge(bridge):
igor@29 91 if bridge in hidden_bridges:
igor@29 92 return ""
igor@29 93 if bridge in bridges_turned_down:
igor@29 94 return "%s [shape=none,shapefile=\"shapes/all/switch_turned_down.png\"]" % (bridge)
igor@29 95 else:
igor@29 96 return "%s [shape=none,shapefile=\"shapes/all/switch.png\"]" % (bridge)
igor@29 97
igor@29 98
igor@0 99 def graph():
igor@0 100 nodelist=""
igor@0 101 bridgelist=""
igor@0 102 linklist=""
igor@0 103 physicallist=""
igor@0 104 networklist=""
igor@0 105
igor@0 106 nodelist=";\n ".join(map(graph_node,nodes))
igor@0 107 if nodelist: nodelist += ";"
igor@0 108
igor@29 109 bridgelist=";\n ".join(map(graph_bridge,bridges))
igor@0 110 if bridgelist: bridgelist += ";"
igor@0 111
igor@0 112 links=[]
igor@0 113 for host, bridges_raw in vbridges_table.iteritems():
igor@0 114 i=0
igor@0 115 for this_bridge in bridges_raw:
igor@27 116 if this_bridge in hidden_bridges or not this_bridge:
igor@0 117 continue
igor@28 118 if not [ host, bridges_raw.index(this_bridge), this_bridge ] in temporary_links:
igor@28 119 links.append(host+" -- "+this_bridge+" [taillabel=\"fa"+str(bridges_raw.index(this_bridge))+"/0\"]")
igor@27 120 i+=1
igor@27 121 # if [ host, this_bridge ] in broken_links:
igor@27 122 # links.append(host+" -- "+this_bridge+" [taillabel=\"fa"+str(i)+"/0\",style=dashed]")
igor@27 123 # else:
igor@27 124 # links.append(host+" -- "+this_bridge+" [taillabel=\"fa"+str(i)+"/0\"]")
igor@0 125
igor@0 126 for link in temporary_links:
igor@28 127 links.append(link[0]+" -- "+link[2]+" [taillabel=\"fa"+str(link[1])+"/0\",color=blue,len=10,w=5,weight=5]")
igor@0 128
igor@27 129 for link in broken_links:
igor@28 130 links.append(link[0]+" -- "+link[2]+" [taillabel=\"fa"+str(link[1])+"/0\",style=dashed]")
igor@27 131
igor@0 132 linklist=";\n ".join(links)
igor@0 133
igor@0 134 graph_dot = {
igor@0 135 'nodelist' : nodelist,
igor@0 136 'bridgelist' : bridgelist,
igor@0 137 'linklist' : linklist,
igor@0 138 'physicallist' : physicallist,
igor@0 139 'networklist' : networklist,
igor@0 140 }
igor@0 141
igor@10 142 f = open("xenomips.dot", "w");
igor@10 143 f.write ("""
igor@0 144 graph G {
igor@0 145 edge [len=1.25];
igor@0 146 splines=true;
igor@0 147 // nodes
igor@0 148
igor@0 149 node [shape=plaintext,color=white,shapefile="shapes/cisco.bmp/router.png"];
igor@0 150 %(nodelist)s
igor@0 151
igor@0 152 // bridges
igor@0 153
igor@6 154 node [shape=none,shapefile="shapes/all/switch.png"];
igor@0 155 %(bridgelist)s
igor@0 156
igor@0 157 // physical
igor@0 158
igor@0 159 node [shape=rectangle,color=blue];
igor@0 160 %(physicallist)s
igor@0 161
igor@0 162 // networks (not bridges, not physical)
igor@0 163 node [shape=rectangle,color=green];
igor@0 164 %(networklist)s
igor@0 165
igor@0 166 // links (between nodes and bridges)
igor@0 167 %(linklist)s
igor@0 168
igor@0 169 };
igor@10 170 """ % graph_dot)
igor@10 171 f.close()
igor@10 172 run_command("neato -Tpng -o xenomips.png xenomips.dot ")
igor@0 173
igor@27 174 def autoredraw():
igor@27 175 graph()
igor@27 176
igor@0 177 def start_all():
igor@0 178 create_bridges_script()
igor@0 179 create_screens_script()
igor@0 180 create_domains_script()
igor@0 181 graph()
igor@0 182 print """
igor@0 183 cat <<NOTE_FOR_USER
igor@0 184 # To view virtual network map, run:
igor@0 185 gqview xenomips.png
igor@0 186 # To attach to VM consoles, run:
igor@0 187 screen -c screenrc
igor@0 188 NOTE_FOR_USER
igor@0 189 """
igor@0 190
igor@0 191 def shell():
igor@0 192 ipshell = IPShellEmbed()
igor@0 193 ipshell()
igor@0 194
igor@0 195 def stop_all():
igor@4 196 destroy_domains_script()
igor@0 197
igor@0 198 def show_usage():
igor@0 199 print """Usage:
igor@0 200 xentaur {start|stop|start-bridges|start-domains|stop-domains|screen|graph}
igor@0 201 """
igor@0 202
igor@23 203 #-----------------------------------------------------------------------
igor@23 204 # DOMAINS
igor@23 205
igor@23 206 def get_domain_id(domain):
igor@23 207 return run_command_return_stdout("sudo xm list | awk '{if ($1 == \"'%s'\") print $2}'" % domain).rstrip("\n")
igor@23 208
igor@22 209
igor@22 210 #-----------------------------------------------------------------------
igor@22 211 # BRIDGES and IFACES
igor@22 212
igor@22 213 def bridge_down(bridge):
igor@22 214 """
igor@22 215 Turn the bridge <bridge> down
igor@22 216 """
igor@29 217 if bridge in bridges_turned_down:
igor@29 218 print "Bridge %s is turned down already" % (bridge)
igor@29 219 else:
igor@29 220 bridges_turned_down.append(bridge)
igor@29 221 run_command("sudo ip link set %s down" % bridge)
igor@29 222 autoredraw()
igor@22 223
igor@22 224 def bridge_up(bridge):
igor@22 225 """
igor@22 226 Turn the bridge <bridge> up
igor@22 227 """
igor@29 228 if not (bridge in bridges_turned_down):
igor@29 229 print "Bridge %s is turned up already" % (bridge)
igor@29 230 else:
igor@29 231 bridges_turned_down.remove(bridge)
igor@29 232 run_command("sudo ip link set %s up" % bridge)
igor@29 233 autoredraw()
igor@22 234
igor@22 235 def show_bridge(bridge):
igor@22 236 """
igor@22 237 Show the state of the bridge <bridge>
igor@22 238 """
igor@22 239 run_command("sudo ip link show %s" % bridge)
igor@22 240
igor@23 241
igor@23 242 def int_disconnect(domain, int_number):
igor@23 243 """
igor@23 244 Disconnect the interface with the number <int_number>
igor@23 245 of the domain <domain> from the bridge to which
igor@23 246 it is connected
igor@23 247 """
igor@23 248 dom_id=get_domain_id(domain)
igor@23 249 bridge=vbridges_table[domain][int_number]
igor@23 250 if not bridge:
igor@23 251 print "Interface %s of the %s domain is not connected" % (int_number, domain)
igor@23 252 return 1
igor@23 253 run_command("sudo brctl delif %s vif%s.%s" % (bridge, dom_id, int_number))
igor@23 254 vbridges_table[domain][int_number]=''
igor@28 255 if [ domain, int_number, bridge ] in temporary_links:
igor@28 256 temporary_links.remove([ domain, int_number, bridge ])
igor@27 257 else:
igor@28 258 broken_links.append([ domain, int_number, bridge ])
igor@27 259 autoredraw()
igor@23 260
igor@23 261 def int_connect(domain, int_number, bridge):
igor@23 262 """
igor@23 263 Connect the interface with the number <int_number>
igor@24 264 of the domain <domain> to the bridge <bridge>
igor@23 265 """
igor@23 266 dom_id=get_domain_id(domain)
igor@23 267
igor@23 268 if vbridges_table[domain][int_number]:
igor@23 269 print "Interface %s of the %s domain is connected already to the %s bridge" % (int_number, domain, vbridges_table[domain][int_number])
igor@23 270 return 1
igor@23 271 run_command("sudo brctl addif %s vif%s.%s" % (bridge, dom_id, int_number))
igor@23 272 vbridges_table[domain][int_number]=bridge
igor@28 273 if [ domain, int_number, bridge ] in broken_links:
igor@28 274 broken_links.remove([ domain, int_number, bridge ])
igor@27 275 else:
igor@28 276 temporary_links.append([ domain, int_number, bridge ])
igor@27 277 autoredraw()
igor@23 278
igor@24 279 def int_reconnect(domain, int_number, bridge):
igor@24 280 """
igor@24 281 Reconnect the interface with the number <int_number>
igor@24 282 of the domain <domain> from the bridge to which
igor@24 283 it is connected to the bridge <bridge>
igor@24 284 """
igor@24 285 int_disconnect(domain, int_number)
igor@24 286 int_connect(domain, int_number, bridge)
igor@24 287
igor@24 288 def show_int(domain, int_number):
igor@25 289 """
igor@25 290 Show information about the interface <int_nuber>
igor@25 291 of the domain <domain>
igor@25 292 """
igor@26 293 return vbridges_table[domain][int_number]
igor@24 294
igor@28 295
igor@28 296 def dump_start(bridge, filter=""):
igor@29 297 run_command("sudo tcpdump -w xentaur.dump -i %s %s" % (bridge,filter))
igor@28 298 return 0
igor@28 299
igor@28 300 def dump_stop():
igor@28 301 return 0
igor@28 302
igor@0 303 #-----------------------------------------------------------------------
igor@0 304
igor@0 305
igor@0 306 def add_domain(name,type):
igor@0 307 domains.append(name)
igor@0 308 domain_types.append(type)
igor@0 309
igor@0 310 def brake_link(domain,bridge):
igor@0 311 broken_links.append([domain,bridge])
igor@0 312
igor@4 313 wt_timeout=0.5
igor@8 314 def write_to(screen,string,return_to_screen=""):
igor@2 315 """
igor@2 316 write_to(screen,string):
igor@2 317
igor@8 318 Type *string* to the specified screen(s).
igor@8 319 Screen may be specified with the number *screen*,
igor@8 320 with array of numbers,
igor@8 321 with array of names.
igor@2 322
igor@2 323 """
igor@5 324 screen_numbers=[] # number of the screens to write to
igor@5 325 if type(screen) == list:
igor@5 326 screen_numbers=map(lambda x: domains.index(x)+1, screen)
igor@5 327 elif type(screen) == int:
igor@5 328 screen_numbers=[screen]
igor@5 329 else:
igor@5 330 screen_numbers=[domains.index(screen)+1]
igor@5 331
igor@5 332 for screen_number in screen_numbers:
igor@5 333 run_command("screen -X select "+str(screen_number))
igor@5 334 time.sleep(wt_timeout)
igor@5 335 for line in string.splitlines():
igor@5 336 f=open('/tmp/xentaurbuf', 'w')
igor@5 337 f.write(line+"\n")
igor@5 338 f.close()
igor@5 339 run_command("screen -X readreg p /tmp/xentaurbuf")
igor@5 340 time.sleep(wt_timeout)
igor@5 341 run_command("nohup screen -X paste p >& /dev/null")
igor@5 342 time.sleep(wt_timeout)
igor@5 343
igor@8 344 if return_to_screen != "":
igor@8 345 run_command("screen -X select %s" % (return_to_screen))
igor@8 346 time.sleep(wt_timeout)
igor@0 347
igor@0 348 #-----------------------------------------------------------------------
igor@0 349
igor@5 350 cisco_fa01_up="""
igor@5 351 ena
igor@5 352 conf t
igor@5 353 int fa0/0
igor@5 354 no shutdown
igor@5 355 exit
igor@5 356 int fa1/0
igor@5 357 no shutdown
igor@5 358 exit
igor@5 359 exit
igor@5 360 exit
igor@5 361 """
igor@5 362
igor@5 363 cisco_set_ip_on_int="""
igor@5 364 interface fa%s/0
igor@5 365 no ip address
igor@5 366 ip address %s 255.255.255.0
igor@5 367 exit
igor@5 368 """
igor@5 369
igor@5 370 #-----------------------------------------------------------------------
igor@0 371
igor@0 372 nodes=domains
igor@0 373
igor@0 374 if len(sys.argv) > 1:
igor@0 375 if sys.argv[1] == 'start':
igor@0 376 start_all()
igor@0 377 if sys.argv[1] == 'stop':
igor@0 378 stop_all()
igor@0 379 if sys.argv[1] == 'start-bridges':
igor@3 380 create_bridges_script()
igor@0 381 if sys.argv[1] == 'start-domains':
igor@3 382 create_domains_script()
igor@0 383 if sys.argv[1] == 'stop-domains':
igor@3 384 destroy_domains_script()
igor@0 385 elif sys.argv[1] == 'screen':
igor@3 386 create_screens_script()
igor@0 387 elif sys.argv[1] == 'graph':
igor@0 388 graph()
igor@0 389 elif sys.argv[1] == 'shell':
igor@0 390 shell()
igor@0 391
igor@0 392 else:
igor@0 393 show_usage()
igor@0 394 sys.exit(1)
igor@0 395
igor@0 396 sys.exit(0)
igor@0 397
igor@0 398